Light emitting apparatus and surface light source apparatus having the same

ABSTRACT

Provided are a light emitting apparatus and a surface light source apparatus having the same. The light emitting apparatus comprises a package body, a first color light emitting part in a first cavity of the package body, and a second color light emitting part in a second cavity of the package body. The package body comprises a plurality of cavities.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of co-pending application Ser. No.14/023,317, filed Sep. 10, 2013, which is a Continuation of applicationSer. No. 12/144,442, filed on Jun. 23, 2008, now U.S. Pat. No.8,556,488, issued Oct. 15, 2013, which claims priority under 35 U.S.C.119 of Korean Patent Application No. 10-2007-0060930, filed on Jun. 21,2007, all of which are hereby expressly incorporated by reference intheir entireties.

BACKGROUND

Nitride semiconductors in III-V groups are variously applied to a lightdevice such as blue/green light emitting diodes (LEDs), a high speedswitching device such as a metal oxide semiconductor field effecttransistor (MOSFET) and a hetero junction field effect transistor(HEMT), and a light source of a lighting unit and a display device.

SUMMARY

Embodiments provide a light emitting apparatus that can realize a whitelight emitting part and a green light emitting part in one package, anda surface light source apparatus having the same.

Embodiments provide a light emitting apparatus that operates incooperation with an external apparatus to illuminate white light and/orgreen light in the form of surface light, and a surface light sourceapparatus having the same.

An embodiment provides a light emitting apparatus comprising: a packagebody comprising a plurality of cavities; a first color light emittingpart in a first cavity of the package body; and a second color lightemitting part in a second cavity of the package body.

An embodiment provides a surface light source apparatus comprising: alight emitting unit comprising at least one light emitting apparatuscomprising a first color light emitting part in a first cavity of apackage body, and a second color light emitting part in a second cavityof the package body; and a surface light source unit one side of thelight emitting unit, the surface light source unit illuminating lightincident from the first color light emitting part and the second colorlight emitting part in a form of surface light.

An embodiment provides a surface light source apparatus comprising: alight emitting unit comprising at least one light emitting apparatuscomprising a first color light emitting part in a first cavity of apackage body, and a second color light emitting part in a second cavityof the package body, and a substrate to which the light emittingapparatus is electrically connected; a driving control circuitselectively controlling driving of the first color light emitting partand the second color light emitting part as a door is opened; and asurface light source unit one side of the light emitting apparatus, thesurface light source unit illuminating light incident from the firstcolor light emitting part and the second color light emitting part in aform of surface light.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a light emitting apparatus according to afirst embodiment.

FIG. 2 is a cross-sectional view of FIG. 1 taken along a line A-A.

FIG. 3 is a cross-sectional view of FIG. 1 taken along a line B-B.

FIG. 4 is a perspective view of a surface light source apparatus havingthe light emitting apparatus of FIG. 1.

FIG. 5 is a side cross-sectional view of FIG. 4.

FIG. 6 is a front view of a light emitting apparatus according to asecond embodiment.

FIG. 7 is a perspective view of a surface light source apparatus havingthe light emitting apparatus of FIG. 6.

FIG. 8 is a side cross-sectional view of FIG. 7.

FIG. 9 is a front view of a light emitting apparatus according to athird embodiment.

FIG. 10 is a cross-sectional view of FIG. 9, taken along a line C-C.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the embodiments of the presentdisclosure, examples of which are illustrated in the accompanyingdrawings.

FIG. 1 is a front view of a light emitting apparatus according to afirst embodiment, FIG. 2 is a cross-sectional view of FIG. 1 taken alonga line A-A, and FIG. 3 is a cross-sectional view of FIG. 1 taken along aline B-B.

Referring to FIG. 1, the light emitting apparatus 100 comprises apackage body 110, a first color light emitting part 120, and a secondcolor light emitting part 130.

The package body 110 can be formed in a silicon-based wafer levelpackage (WLP). Also, the package body 110 can be formed in one of aceramic type substrate, a printed circuit board (PCB) type substrate,and a lead frame type substrate using materials such as abismaleimide-triazine (BT)-resin and an FR-4. Also, the package body 110can be formed in a single layer substrate or a multi-layered substrate.There is no limitation for a material of the package body 110.

The package body 110 comprises a first cavity 121 and a second cavity131. The first color light emitting part 120 can be realized in thefirst cavity 121, and the second color light emitting part 130 can berealized in the second cavity 131. The first cavity 121 and the secondcavity 131 can be arranged in a vertical direction or a horizontaldirection in the upper surface of the package body 110. The locations ofthe first and second cavities 121 and 131 can change.

The first and second cavities 121 and 131 of the package body 110 aredivided by a divider 116.

The first and second cavities 121 and 131 can be formed in a cup shapeor a bathtub shape to have a predetermined depth on the upper surface ofthe package body 110. The surface shapes of the first and secondcavities 121 and 131 can be a square or a rectangle, and are not limitedthereto.

Lateral sides 122 and 132 of the first and second cavities 121 and 131can be formed slope. The lateral sides 122 and 132 are inclined at apredetermined angle (for example, about 120°) with respect to the bottomof the cavities, respectively, to reflect incident light.

First to fourth electrodes 141, 142, 143, and 144 are formed on thesurface of the package body 110. The first and second electrodes 141 and142 extend from the bottom of the first cavity 121 up to the upper side,the lateral sides, and a portion of the rear side of the package body110. The first and second electrodes 141 and 142 are electrically openby a first dielectric part 123 formed in the first cavity 121. The firstto fourth electrodes 141, 142, 143, and 144 can be formed by a platingmethod. First dielectric part 123 may separate first and secondelectrodes 141 and 142 via an angle so as to have a first portion closerto the first electrode 141 than second electrode 142, and an oppositesecond portion closer to the second electrode 142 than first electrode141.

The third and fourth electrodes 143 and 144 extend from the bottom ofthe second cavity 131 up to the upper side, the lateral sides, and therear side of the package body 110. The third and fourth electrodes 143and 144 are electrically separated by a second dielectric part 133formed in the second cavity 131. Second dielectric part 133 may separatethird and fourth electrodes 143 and 144 via an angle so as to have afirst portion closer to the third electrode 143 than fourth electrode144, and an opposite second portion closer to the fourth electrode 144than third electrode 143.

Referring to FIGS. 1 and 2, the first color light emitting part 120 isrealized in the first cavity 121, and comprises first light emittingdiodes (LEDs) 126 and a first resin material 128, and emits first colorlight.

The first LEDs 126 comprises at least one blue LED. The first LED 126 isattached on the first electrode 141 or the second electrode 142 locatedat the first cavity 121, and is electrically connected to the firstelectrode 141 and the second electrode 142 using wires 127.

The first resin material 128 is formed in the first cavity 121, and canbe formed of a resin material such as transparent epoxy and silicon, andcomprises a phosphor 129 therein. The phosphor 129 absorbs a portion ofblue light from the first LEDs 126 to emit yellow light, and cancomprise YAG or silicate-based yellow phosphor, for example. The firstcolor light emitting part 120 emits white light by mixing blue lightfrom the first LEDs 126 with yellow light emitted from the phosphor 129.

For another example of the first color light emitting part 120, thefirst LEDs 126 can comprise a red LED, a green LED, and a blue LED. Inthis case, the first color light emitting part 120 can emit white lightusing these three color LEDs. In this case, phosphor do not need to beadded to the first resin material 128.

For still another example of the first color light emitting part 120,the first LEDs 126 can comprise at least one ultraviolet (UV) LED, andthe phosphor 129 added to the first resin material 128 can comprise redphosphor, green phosphor, and blue phosphor.

Referring to FIGS. 1 and 3, the second color light emitting part 130 isformed in the second cavity 131, and comprises second LEDs 136 and asecond resin material 138, and emits second color light.

The second LEDs 136 are green LEDs. The second LED 136 is attached onthe third electrode 143 or the fourth electrode 144 located on thebottom of the second cavity 131, and is electrically connected to thethird electrode 143 and the fourth electrode 144 using wires 137.

The second resin material 138 is formed in the second cavity 131,protects the second LEDs 136, and can be formed of transparent epoxy orsilicon.

For another example of the second color light emitting part 130, thesecond LEDs 136 are UV LEDs, and green phosphor can be added to thesecond resin material 138. Light emitted from the UV LEDs are changedinto green light by the green phosphor.

Meanwhile, each of the first and second LEDs 126 and 136 is mounted in achip shape. In case of a horizontal device, a plurality of wires can beconnected to two electrodes. In case of a vertical device, each chip canbe attached on one of the electrodes using a conductive adhesive, andconnected to the other using a wire. Also, the first and second LEDs 126and 136 can be connected to two electrodes in a flip-chip method. Thefirst and second LEDs 126 and 136 can change depending on a mountingmethod and the kind of the chip, and are not limited thereto.

Referring to FIGS. 2 and 3, the first and second color light emittingparts 120 and 130 can emit target color light through selectivecombination of LEDs of various colors, UV LEDs, and phosphor of variouscolors.

The surfaces of the first resin material 128 and the second resinmaterial 138 can be at lease one of a concave shape, a convex shape, anda flat shape. A lens can be formed on the first resin material 128and/or the second resin material 138.

In the case where a plurality of first LEDs 126 are provided, they canbe connection in series or in parallel. Also, in the case where aplurality of second LEDs 136 are provided, they can be connection inseries or in parallel.

An electrostatic discharge (ESD) device can be mounted in the packagebody 110. The ESD device is connected to the first LEDs 126 and thesecond LEDs 136 in parallel, and protects the first and second LEDs 126and 136 from an overvoltage that may be applied thereto.

The first LEDs 126 of the first color light emitting part 120, and thesecond LEDs 136 of the second color light emitting part 130 can bedriven independently. For example, the first LEDs 126 and the secondLEDs 136 can operate in inverted states, respectively, or can beturned-on/off simultaneously.

FIG. 4 is a perspective view of a surface light source apparatus havingthe light emitting apparatus of FIG. 1, and FIG. 5 is a sidecross-sectional view of FIG. 4.

Referring to FIGS. 4 and 5, the surface light source apparatus 150comprises a light emitting unit 151 and a surface light source unit 153.

The light emitting unit 151 comprises a substrate 101 and at least onelight emitting apparatus 100. The substrate 101 can be realized in oneof a metal substrate (for example, metal core PCB), a general PCB, and aflexible substrate. The substrate 101 can be another kind of substrate.

At least one light emitting apparatus 100 can be electrically connectedon the substrate 101. In the case where a plurality of light emittingapparatuses 100 are provided, they can be arranged on the substrate 101in a predetermined direction with a predetermined interval.

A water-proof member such as silicon or epoxy can be formed between thesubstrate 101 and the light emitting apparatus 100 in order to protectan electrical characteristic.

The first color light emitting part 120 of the light emitting apparatus100 is disposed on an upper portion of the substrate 101, and the secondcolor light emitting part 130 is disposed on a lower portion of thesubstrate 101. Here, the disposed positions of the first color lightemitting part 120 and the second color light emitting part 130 canchange.

The surface light source unit 153 is disposed on one side of the lightemitting unit 151. The surface light source unit 153 is disposed in alight emission direction of the light emitting unit 151 to changeincident point light into surface light and emit the same.

The surface light source unit 153 comprises a light guide plate (LGP)160 and a reflector 170. The LGP 160 guides light incident from thefirst color light emitting part 120 and/or the second color lightemitting part 130 to illuminate the light in the form of surface light.

The LGP 160 can be formed of an acryl-based resin, for example,polymethyl methacrylate (PMMA). Reflective patterns (not shown) can beformed on an upper surface 161 of the LGP 160. The reflective patternsare formed in a constant interval or a random interval to reflectincident light to a lower surface 162.

Also, the reflector 170 is attached on the upper surface of the LGP 160to reflect back light that leaks to the upper surface 161 of the LGP170. Also, the reflector 170 blocks light that leaks between the lightemitting apparatus 100 and the LGP 160. That is, the length of thereflector 170 can be longer than that of the LGP 160.

A reflective material can be coated on surfaces 160 except the incidentsurface, the upper surface 161, and the lower surface 162 of the LGP 160to prevent light leakage.

Referring to FIG. 5, the substrate 101 comprises a driving controlcircuit 105. The driving control circuit 105 selectively controls thefirst color light emitting part 120 and the second color light emittingpart 130 to on/off modes.

When the first LEDs 126 of the first color light emitting part 120 areturned on, white light emitted from the first color light emitting part120 is incident to the LGP 160 of the surface light source unit 153. Thelight incident to the LGP 160 is guided into the LGP 160, reflected bythe reflector 170 and the reflective patterns (not shown), andilluminated in the form of surface light through the lower surface 162of the LGP 162. At this point, the second color light emitting part 130can operate in the off mode.

When the second LEDs 136 of the second color light emitting part 130 areturned on, green light emitted from the second color light emitting part130 is incident to the LGP 160 of the surface light source unit 153. Thelight incident to the LGP 160 is guided into the LGP 160, reflected bythe reflector 170 and the reflective patterns (not shown), andilluminated in the form of surface light through the lower surface 162of the LGP 162.

The surface light source apparatus 150 can be applied to an apparatusrequiring white light and green light, for example, to a cooling roomand a freezing room of a refrigerator. In the case where the lightemitting unit 151 is installed in a cooling room, the first color lightemitting part 120 is turned on when a cooling room door is opened toilluminate white light to the inside of the cooling room, and is turnedoff when the cooling room door is closed. The second color lightemitting part 130 is turned on when a refrigerator door is closed toilluminate green light to the inside of the cooling room, and is turnedoff when the refrigerator door is opened. The green light can maintainfreshness of vegetables disposed inside the cooling room.

The light emitting unit 151 illuminates white light or green light asthe refrigerator door is opened/closed to perform a lighting functionand maintain freshness of vegetables disposed inside the cooling room.Embodiments can be applied to the field of a lighting as well as ageneral refrigerator and a kimchi refrigerator.

FIG. 6 is a front view of a light emitting apparatus according to asecond embodiment. In description of the second embodiment, explanationsof the same parts as those of the first embodiment are omitted.

Referring to FIG. 6, a light emitting apparatus 200 comprises a packagebody 210, a first color light emitting part 220 emitting blue light, anda second color light emitting part 230 emitting green light.

The first color light emitting part 220 is realized in a first cavity221 of the package body 210, and comprises first LEDs 226 and a firstresin material 228. The first LEDs 226 are blue LEDs, and the firstresin material 228 is formed of transparent epoxy or silicon.

The second color light emitting part 230 is realized in a second cavity231 of the package body 210, and comprises second LEDs 236 and a secondresin material 238. The second LEDs 236 are green LEDs, and the secondresin material 238 is formed of transparent epoxy or silicon. Here, inthe second color light emitting part 230, the second LED 236 can be UVLEDs and green phosphor can be added to the second resin material 238 toemit green light.

The first cavity 221 and the second cavity 231 of the package body 210is divided by a divider 216.

The first color light emitting part 220 emits blue light, and the secondcolor light emitting part 230 emits green light. Unlike the firstembodiment, the second embodiment does not use phosphor, and the bluelight can be changed into white light by phosphor disposed on anexternal light path.

FIG. 7 is a perspective view of a surface light source apparatus havingthe light emitting apparatus of FIG. 6, and FIG. 8 is a sidecross-sectional view of FIG. 7. In description of the surface lightsource apparatus, explanations of the same parts are omitted.

Referring to FIGS. 7 and 8, the surface light source apparatus 250comprises a light emitting unit 251 and a surface light source unit 253.

The light emitting unit 251 comprises a light emitting apparatus 200 anda substrate 201. At least one light emitting apparatus 200 can bedisposed on the substrate 201. In the case where a plurality of lightemitting apparatuses 200 are disposed, they can be disposed in apredetermined direction.

A first color light emitting part 220 is disposed on the upper portionof the light emitting unit 251, and a second color light emitting part230 is disposed on the lower portion of the light emitting unit 251. Thefirst color light emitting part 220 emits blue light, and the secondcolor light emitting part 230 emits green light.

A driving control circuit 205 can be disposed on a predetermined portionof the substrate 201 to control the first color light emitting part 220and the second color light emitting part 230.

The surface light source unit 253 comprises a first LGP 260A, a secondLGP 260B, a reflector 270, and a color filter film 275.

The first LGP 260A corresponds to the first color light emitting part220, and the second LGP 260B corresponds to the second color lightemitting part 230.

The first LGP 260A changes incident blue light into white light. Forthis purpose, yellow phosphor can be added to the first LGP 260A whenthe first LGP 260A is manufactured. Alternatively, at least one of theincident surface, the upper surface, and the lower surface, which is alight emission surface of the first LGP 260A, can be coated with yellowphosphor.

The reflector 270 is disposed on the first LGP 260A, and the colorfilter film 275 is dispose between the first LGP 260A and the second LGP260B.

A reflective material can be coated on surfaces except the incidentsurface, the upper surface, and the lower surface of the first LGP 260Aand the second LGP 260B to block light leaking to the outside.

The color filter film 275 is disposed between the first LGP 260A and thesecond LGP 260B. The color filter film 275 transmits all of lightincident from the first LGP 260A, and reflects green light incident fromthe second LGP 260B.

Blue light emitted from the first color light emitting part 220 isincident to the first LGP 260A, and a portion of the blue light isguided to the inside of the first LGP 260A and changed into yellow lightby phosphor coated inside the first LGP 260A. At this point, yellowlight, blue light, and white light obtained by mixing the yellow lightand the blue light can be emitted to the lower surface, which is a lightemission surface of the first LGP 260A.

Also, light incident to the first LGP 260A is emitted to the lowerdirection in the form of surface light by reflective patterns (notshown) of the first LGP 260A and the reflector 270. At this point, thelight emitted from the first LGP 260A passes through the color filterfilm 275 and is illuminated as white light by way of the second LGP260B.

Green light emitted from the second color light emitting part 230 isincident to the second LGP 260B. The green light incident to the secondLGP 260B is guided to the inside of the second LGP 260B, and reflectedby reflective patterns of the second LGP 260B and the color filter film275, and illuminated to the lower surface of the second LGP 260B in theform of surface light.

Referring to FIG. 8, a driving control circuit 205 can be disposed on apredetermined portion of the substrate 201.

The light emitting unit 251 emits at least one of blue light and greenlight. The blue light is emitted as white surface light L1 by the firstLGP 260A, and the green light is emitted as green surface light L2 bythe second LGP 260B. The color filter film 275 transmits light incidentfrom the first LGP 260A, and reflects light incident to the second LGP260B. This structure selectively transmits or reflects light using thecolor filter film 275 located between the first LGP 260 a and the secondLGP 260B, so that the light can be illuminated as white light or greenlight.

The disposed positions of the first color light emitting part 220, thefirst LGP 260A, the second color light emitting part 230, and the secondLGP 260B can change.

FIG. 9 is a front view of a light emitting apparatus according to athird embodiment, and FIG. 10 is a cross-sectional view of FIG. 9, takenalong a line C-C.

Referring to FIGS. 9 and 10, the light emitting apparatus 300 comprisesa package body 310, a first cavity 321, a second cavity 331, a pluralityof lead frames 341, 342, 343, and 344, a first color light emitting part320, and a second color light emitting part 330.

The package body 310 can be formed of one of poly phthal amid (PPA),liquid crystal polymer (LCP), and syndiotactic polystyrene (SPS).

A first lead frame 341 and a second lead frame 342 are formed in thefirst cavity 321 of the package body 310. The first lead frame 341 andthe second lead frame 342 pass through the package body 310 at thebottom of the first cavity 321 and is exposed to the outside, and usedas electrode terminals. Also, a third lead frame 343 and a fourth leadframe 344 are formed in the second cavity 331 of the package body 310.The third lead frame 343 and the fourth lead frame 344 pass through thepackage body 310 at the bottom of the second cavity 331 and is exposedto the outside, and used as electrode terminals.

The first color light emitting part 320 is formed in the first cavity321, and comprises first LEDs 326 and a first resin material 338. Thefirst LED 326 is attached on one of the first lead frame 341 or thesecond lead frame 342, and electrically connected to the first andsecond lead frames 341 and 342 using wires 327.

The second color light emitting part 330 is formed in the second cavity331, and comprises second LEDs 336 and a second resin material 338. Thesecond LED 336 is attached on one of the third lead frame 343 or thefourth lead frame 344, and electrically connected to the third andfourth lead frames 343 and 344 using wires 337.

The first and second LEDs 326 and 336 can be connected to the pluralityof lead frames using a flip-chip method or at least one wire, and thereis no limitation in connection the first and second LEDs 326 and 336.

Also, the first LEDs 326 of the first color light emitting part 320 canbe formed in one group of a blue LED group, a UV LED group, ared/green/blue LED group. The first color light emitting part 320 canemit white light. The white light can be realized using a blue LED and ayellow LED, or using the UV LED and red/green/yellow phosphor, or thered/green/blue LEDs.

The second LEDs 336 of the second color light emitting part 330 comprisea green LED or a UV LED. The second color light emitting part 330 emitsgreen light. The green light can be realized using a green LED, or usinga UV LED and green phosphor.

A surface light apparatus can be realized by disposing the surface lightsource unit of the first embodiment or the surface light source unit ofthe second embodiment in the light emission direction of the lightemitting apparatus 300. Accordingly, at least one of white light andgreen light can be provided in the form of surface light.

According to the embodiments, since one package emits white light andgreen light, the package can be installed in a place requiring whitelight and green light, for example, the inside of a refrigerator.Therefore, the white light is illuminated when a door of therefrigerator is opened, and green light is illuminated when the door ofthe refrigerator is closed to maintain freshness of vegetables in acooling room.

Also, the white light and the green light can be provided in the form ofsurface light.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is comprised in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to effect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A light emitting apparatus comprising: a packagebody having a first cavity and a second cavity; a first color lightemitting part in the first cavity; and a second color light emittingpart in the second cavity, wherein the first and second cavities includelateral sidewalls formed at oblique angles from respective bottomsurfaces of the first and second cavities, wherein the first color lightemitting part includes: a first body, first and second light emittingdiodes (LEDs), and first and second electrodes electrically connectedwith the first and second LEDs, on the lateral sidewalls of the firstcavity and sloped outer sidewalls of the first body, and along a partialportion of an under surface of the first body, wherein the first andsecond electrodes are separated by a first gap, wherein the second colorlight emitting part includes a second body, third and fourth lightemitting diodes (LEDs), and third and fourth electrodes electricallyconnected with the third and fourth LEDs, on the lateral sidewalls ofthe second cavity and sloped outer sidewalls of the second body, andalong a partial portion of an under surface of the second body, whereinthe third and fourth electrodes are separated by a second gap, andwherein the first color light emitting part and the second color lightemitting part emit different color light.
 2. The light emittingapparatus according to claim 1, wherein the first color light emittingpart comprises a first resin material in the first cavity, and thesecond color light emitting part comprises a second resin material inthe second cavity.
 3. The light emitting apparatus according to claim 1,wherein the first and second LEDs are blue LEDs, and wherein the thirdand fourth LEDs are green LEDs.
 4. The light emitting apparatusaccording to claim 1, further comprising a divider separating the firstcavity from the second cavity.
 5. The light emitting apparatus accordingto claim 1, wherein the first color light emitting part emits whitelight, and wherein the second color light emitting part emits greenlight.
 6. The light emitting apparatus according to claim 2, wherein thefirst light emitting diode comprises one of a blue light emitting diodeor a ultraviolet light emitting diode, and the first resin materialcomprises at least one of a yellow phosphor material, a green phosphormaterial, or a blue phosphor material.
 7. The light emitting apparatusaccording to claim 1, wherein the first and second electrodes areelectrically insulated from each other in the first cavity, and whereinthe third and fourth electrodes are electrically insulated from eachother in the second cavity.
 8. The light emitting apparatus according toclaim 1, further comprising a lens on the first cavity or the secondcavity.
 9. The light emitting apparatus according to claim 1, whereinthe first and second light emitting diodes are mounted in a chip shapeon the first and second electrodes, respectively.
 10. The light emittingapparatus according to claim 1, wherein the first light emitting diodeand the third light emitting diode are driven independently.
 11. Thelight emitting apparatus according to claim 1, wherein the first lightemitting diode and the third light emitting diode are operated ininverted states, respectively, or turned-on/off simultaneously.
 12. Thelight emitting apparatus according to claim 1, wherein the firstelectrode has a first plate structure disposed on a first portion of thefirst body, the first plate structure including an upper surface havinga first end portion between the first and second light emitting diodes,the first end portion tilted on a horizontal axis of the upper surface.wherein the second electrode has a second plate structure disposed on asecond portion of the first body, the second plate structure includingan upper surface having a second end portion between the first andsecond light emitting diodes and parallel to the first end portion. 13.The light emitting apparatus according to claim 12, wherein the firstgap is disposed between the first end portion and the second endportion.
 14. The light emitting apparatus according to claim 13, whereinthe first gap and the first end portion are parallel.
 15. The lightemitting apparatus according to claim 12, wherein an uppermost surfaceof the first plate structure and an uppermost surface of the secondplate structure are disposed on the same horizontal plane.
 16. A surfacelight source apparatus comprising: the light emitting apparatus recitedin claim 1; and a surface light source unit on one side of the lightemitting apparatus, the surface light source unit illuminating lightincident from the light emitting apparatus in the form of surface light.17. The surface light source apparatus according to claim 16, whereinthe surface light source unit comprises: a light guide plate receivingcolor light emitted from the light emitting apparatus to illuminate thecolor light in a form of surface light; and a reflector reflecting lightthat leaks to the light guide plate.
 18. The surface light sourceapparatus according to claim 16, wherein the first light emitting diodeand the third light emitting diode are driven independently.
 19. Thesurface light source apparatus according to claim 16, wherein the firstlight emitting diode and the third light emitting diode are operated ininverted states, respectively, or turned-on/off simultaneously.
 20. Thesurface light source apparatus according to claim 16, wherein the firstelectrode has a first plate structure disposed on a first portion of thefirst body, the first plate structure including an upper surface havinga first end portion between the first and second light emitting diodes,the first end portion tilted on a horizontal axis of the upper surface.wherein the second electrode has a second plate structure disposed on asecond portion of the first body, the second plate structure includingan upper surface having a second end portion between the first andsecond light emitting diodes and parallel to the first end portion.